Problem with java script(?) in one of the threads

[Bandersnatch]

Have a look at this thread:
https://www.physicsforums.com/threads/dark-matter-question-why-doesnt-it-coalesce-into-normal-matter.774124/

Every time I'm trying to do any sort of action in that thread, from quoting to previewing to posting a reply, as well as during the automatic draft saving, the forum returns one of the following error messages:

 

[Borek]

Confirmed, I have problems with the thread as well.

 

[mfb]

I could move a post from somewhere else into that thread, but now I cannot do anything with that post any more. I sent curiouschris a mail to open a new thread.

 

[Greg Bernhardt]

I could reply now. I disabled a security program that was causing problems.